Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages
Brown and polar bears have become prominent examples in phylogeography, but previous phylogeographic studies relied largely on maternally inherited mitochondrial DNA (mtDNA) or were geographically restricted. The male-specific Y chromosome, a natural counterpart to mtDNA, has remained under-explored...
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Data Archiving and Networked Services (DANS)
2015
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Online Access: | https://doi.org/10.5061/dryad.3p21q |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::c20b8385b3c1c1c2ea0b19798c19ae21 2023-05-15T18:42:15+02:00 Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages Bidon, Tobias Janke, Axel Fain, Steven R. Eiken, Hans Geir Hagen, Snorre B. Saarma, Urmas Hallström, Björn M. Lecomte, Nicolas Hailer, Frank 2015-01-01 https://doi.org/10.5061/dryad.3p21q undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.3p21q https://dx.doi.org/10.5061/dryad.3p21q lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:85491 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:85491 10.5061/dryad.3p21q 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care bear Y chromosome microsatellites STR phylogeography Ursus arctos Ursus maritimus Ursus americanus geo demo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2015 fttriple https://doi.org/10.5061/dryad.3p21q 2023-01-22T16:50:56Z Brown and polar bears have become prominent examples in phylogeography, but previous phylogeographic studies relied largely on maternally inherited mitochondrial DNA (mtDNA) or were geographically restricted. The male-specific Y chromosome, a natural counterpart to mtDNA, has remained under-explored. Although this paternally inherited chromosome is indispensable for comprehensive analyses of phylogeographic patterns, technical difficulties and low variability have hampered its application in most mammals. We developed 13 novel Y-chromosomal sequence and microsatellite markers from the polar bear genome, and screened these in a broad geographic sample of 130 brown and polar bears. We also analyzed a 390 kb-long Y-chromosomal scaffold using sequencing data from published male ursine genomes. Y chromosome evidence support the emerging understanding that brown and polar bears started to diverge no later than the Middle Pleistocene. Contrary to mtDNA patterns, we found (i) brown and polar bears to be reciprocally monophyletic sister (or rather brother) lineages, without signals of introgression, (ii) male-biased gene flow across continents and on phylogeographic time scales, and (iii) male dispersal that links the Alaskan ABC-islands population to mainland brown bears. Due to female philopatry, mtDNA provides a highly structured estimate of population differentiation, while male-biased gene flow is a homogenizing force for nuclear genetic variation. Our findings highlight the importance of analyzing both maternally and paternally inherited loci for a comprehensive view of phylogeographic history, and that mtDNA-based phylogeographic studies of many mammals should be re-evaluated. Recent advances in sequencing technology render the analysis of Y chromosomal variation feasible, even in non-model organisms. Y STR Allele sizesA table of allele sizes of 9 Y STR markers from 134 individualsSubmission DRYAD allele sizes.xlsx Dataset Ursus arctos Ursus maritimus Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care bear Y chromosome microsatellites STR phylogeography Ursus arctos Ursus maritimus Ursus americanus geo demo |
spellingShingle |
Life sciences medicine and health care bear Y chromosome microsatellites STR phylogeography Ursus arctos Ursus maritimus Ursus americanus geo demo Bidon, Tobias Janke, Axel Fain, Steven R. Eiken, Hans Geir Hagen, Snorre B. Saarma, Urmas Hallström, Björn M. Lecomte, Nicolas Hailer, Frank Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages |
topic_facet |
Life sciences medicine and health care bear Y chromosome microsatellites STR phylogeography Ursus arctos Ursus maritimus Ursus americanus geo demo |
description |
Brown and polar bears have become prominent examples in phylogeography, but previous phylogeographic studies relied largely on maternally inherited mitochondrial DNA (mtDNA) or were geographically restricted. The male-specific Y chromosome, a natural counterpart to mtDNA, has remained under-explored. Although this paternally inherited chromosome is indispensable for comprehensive analyses of phylogeographic patterns, technical difficulties and low variability have hampered its application in most mammals. We developed 13 novel Y-chromosomal sequence and microsatellite markers from the polar bear genome, and screened these in a broad geographic sample of 130 brown and polar bears. We also analyzed a 390 kb-long Y-chromosomal scaffold using sequencing data from published male ursine genomes. Y chromosome evidence support the emerging understanding that brown and polar bears started to diverge no later than the Middle Pleistocene. Contrary to mtDNA patterns, we found (i) brown and polar bears to be reciprocally monophyletic sister (or rather brother) lineages, without signals of introgression, (ii) male-biased gene flow across continents and on phylogeographic time scales, and (iii) male dispersal that links the Alaskan ABC-islands population to mainland brown bears. Due to female philopatry, mtDNA provides a highly structured estimate of population differentiation, while male-biased gene flow is a homogenizing force for nuclear genetic variation. Our findings highlight the importance of analyzing both maternally and paternally inherited loci for a comprehensive view of phylogeographic history, and that mtDNA-based phylogeographic studies of many mammals should be re-evaluated. Recent advances in sequencing technology render the analysis of Y chromosomal variation feasible, even in non-model organisms. Y STR Allele sizesA table of allele sizes of 9 Y STR markers from 134 individualsSubmission DRYAD allele sizes.xlsx |
format |
Dataset |
author |
Bidon, Tobias Janke, Axel Fain, Steven R. Eiken, Hans Geir Hagen, Snorre B. Saarma, Urmas Hallström, Björn M. Lecomte, Nicolas Hailer, Frank |
author_facet |
Bidon, Tobias Janke, Axel Fain, Steven R. Eiken, Hans Geir Hagen, Snorre B. Saarma, Urmas Hallström, Björn M. Lecomte, Nicolas Hailer, Frank |
author_sort |
Bidon, Tobias |
title |
Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages |
title_short |
Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages |
title_full |
Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages |
title_fullStr |
Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages |
title_full_unstemmed |
Data from: Brown and polar bear Y chromosomes reveal extensive male-biased gene flow within brother lineages |
title_sort |
data from: brown and polar bear y chromosomes reveal extensive male-biased gene flow within brother lineages |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2015 |
url |
https://doi.org/10.5061/dryad.3p21q |
genre |
Ursus arctos Ursus maritimus |
genre_facet |
Ursus arctos Ursus maritimus |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:85491 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:85491 10.5061/dryad.3p21q 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.3p21q https://dx.doi.org/10.5061/dryad.3p21q |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.3p21q |
_version_ |
1766231891970621440 |